<!DOCTYPE html>
<html>
<head>
	<meta charset="utf-8">
	<meta name="viewport" content="width=device-width, initial-scale=1">
	<title></title>
	<style type="text/css">
/*		div{
			width: 300px;
			height: 300px;
			border: 5px solid;
		}
		div:hover{
			color:#f00;

		}*/
		div{
			width: 0px;
			height: 0px;
			border: 50px solid;
			border-color: transparent transparent blue orange;			
		}
	</style>
</head>
<body>


<div>
	这是文字
</div>



</body>
</html>